1118121111112 has 8 divisors (see below), whose sum is σ = 2096477083350. Its totient is φ = 559060555552.

The previous prime is 1118121111097. The next prime is 1118121111113. The reversal of 1118121111112 is 2111111218111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1020411103716 + 97710007396 = 1010154^2 + 312586^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1118121111112² (a number of 25 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1118121111113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69882569437 + ... + 69882569452.

Almost surely, 2^{1118121111112} is an apocalyptic number.

It is an amenable number.

1118121111112 is a deficient number, since it is larger than the sum of its proper divisors (978355972238).

1118121111112 is a wasteful number, since it uses less digits than its factorization.

1118121111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139765138895 (or 139765138891 counting only the distinct ones).

The product of its digits is 32, while the sum is 22.

Adding to 1118121111112 its reverse (2111111218111), we get a palindrome (3229232329223).

The spelling of 1118121111112 in words is "one trillion, one hundred eighteen billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twelve".